SLAU132V User guide | 德州仪器 TI.com.cn

SLAU132V October 2004 – February 2020

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3.7.4 Feedback Directed Optimization Summary

Options

--gen_profile_info	Adds instrumentation to the compiled code. Execution of the code results in profile data being emitted to a PDAT file.
--use_profile_info=file.prf	Uses profile information for optimization and/or generating code coverage information.
--analyze=codecov	Generates a code coverage information file and continues with profile-based compilation. Must be used with --use_profile_info.
--analyze_only	Generates only a code coverage information file. Must be used with --use_profile_info. You must specify both --analyze=codecov and --analyze_only to do code coverage analysis of the instrumented application.

Host Environment Variables

TI_PROFDATA	Writes profile data into the specified file
TI_COVDIR	Creates code coverage files in the specified directory
TI_COVDATA	Writes code coverage data into the specified file

API

_TI_start_pprof_collection()	Clears the profile counters to file
_TI_stop_pprof_collection()	Writes out all profile counters to file
PPHDNL	Device driver handle for low-level C I/O based driver for writing out profile data from a target program.

Files Created

*.pdat	Profile data file, which is created by executing an instrumented program and used as input to the profile data decoder
*.prf	Profiling feedback file, which is created by the profile data decoder and used as input to the re-compilation step